<!DOCTYPE html>
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
	<title>任务管理</title>
	<style type="text/css">
	body {
      padding: 30px;
    }
    #hd {
      height: 30px;
      background: yellowgreen;
      width: 0;
      text-align: center;
      font-weight: bold;
    }
    </style>
</head>
<body>
	<div id="hd"></div>
	<div id="hd2"></div>
	<script src="index.js"></script>
	<script type="text/javascript">
  
	hd.innerHTML = Math.random();	
	hd2.innerHTML = 487730528962094400;	
	</script>
</body>
</html>